MCQ
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along
- ✓a line perpendicular to the plane of rotation
- Bthe radius
- Cthe tangent to the orbit
- Dthe line making an angle of $45°$ to the plane of rotation

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$(A)$ The electric flux through the shell is $\sqrt{3} R \lambda / \epsilon_0$
$(B)$ The z-component of the electric field is zero at all the points on the surface of the shell
$(C)$ The electric flux through the shell is $\sqrt{2} R \lambda / \epsilon_0$
$(D)$ The electric field is normal to the surface of the shell at all points